Here here. My Macbook pro is unacceptably slow, and I'm only running web browsers. I don't even bother trying to open mail.app any more, or the native calendar app. It's really appalling. My question is, how do a do a reinstall of Lion, which I bought from the app store?

Well, after six weeks of taking apart my macbook and putting it back together I still have an ultra slow mac. I have followed EVERY step recommended (yes it took that long to do every step) and safari (and itunes) still takes 30 seconds plus to launch. It speeeds up slightly after a restart but this is inconvenient to say the least. The delays soon accumulate. Looking at the Activity monitor the process that kills is called Safari Web Content, it seems that some accumulation of information is causing the delays. The best solution, buy a new macbook and install the previous OS Lion!:-( The other thing that kills load times between the two OS's is sophos anti virus. It was not a problem in Lion but severely degrades performance on all applications under Mountain Lion. My slow running mountain lion is occuring without sophos btw!

I came upon this thread when looking for an explanation and a solution to the same problem. It all started when my wife upgraded from a 2008 MacBook Pro to a new 13" MacBook Pro Retina in Jan. For compatibility, I upgraded the OS on my mid 2009 MacBook Pro 2.56 from 10.7 to 10.8.

Then we both noticed a dramatic slow down in virtually every action on both machines, from loading applications, to openeing documents, to opening new web sites in Safari. Plus, on my mid 2009 machine, Safari has become very unstable and crashes sometimes 10 to 20 times a day. Nothing that I've tried has helped so I thought that others might be experiencing similar challenges and have uncovered a solution. I guess not yet......... :-(

I have a office full of mac's some 4 years old upto 6 month old all have at least 8GB to 12GB ram core 2 or core i 5 or corei7 cpus and I have the same issue on at least 10 mac's My mac which is the admin mac uses a local account so if there is a problem with network I can still log in. for the last few week It can take around 20 min before my mac will start I log in then it gets half way through showing the icon on top bar and then dose nothing I have to reboot and after a few time of doing that it will boot and work if it show the time in the top bar it's fine and if it stops before the time show I up I need to reboot as it wont make a network connection . and I have at least 10 on my network account lock each day I have to either renable the account or some time the account is enabled but still wont let user log in.

(Over last few years mac's are getting worse bugger with each update Im close to binning 60+ mac's)

If you're having such severe problems with that many Macs, it is something about the setup of all those Macs that is causing the problem. You've got some crap software on all of them or something along those lines.

Here here. My Macbook pro is unacceptably slow, and I'm only running web browsers. I don't even bother trying to open mail.app any more, or the native calendar app. It's really appalling. My question is, how do a do a reinstall of Lion, which I bought from the app store?

I have the same issue on three different MACs! The boys in MAC OS X Development have dropped the ball and are shipping untested crap! Mac's quality control has gone into the sewer over the past 6 to 9 months. Funny, but Steve Jobs passes away and quality goes with him????

Nonsense. As has already been said multiple times, you have some crap third-party software installed on all three machines, or you're somehow making some other mistake with all three (like trying to run Photoshop and Illustrator on 2 GB of RAM.

Mountain Lion (and Lion before it) are optimized for future merging with iOS and iPads.

The last stable bug free Mac OS for COMPUTERS was 10.6.8 Snow Leopard, which is fairly free of any iOS contamination (or "features", if you insist) and can run the most programs and is still the most backwards compatible (Rosetta).

There are at least a thousand posts in these forums by people asking how to back up to Snow Leopard. Search out the info and hopefully you have a machine that can run it.

I wish it were that simple. It is not. I've cleaned these macs run all the recommendations I have found on various forums and nothing works. It is just bad coding by the OS X development team and a major breakdown in Apple's QA before releasing updates.

If you have been following the news, they are a bit under the gun and have had serious OS X hacks including compromised systems within Apple's private networks! I'm sure some of the latest updates are security patches pushed out quickly to deal with this, but we are all getting the shaft as a result.

Keep in mind the reason that most of us chose the MAC over PC's is we don't have to deal with this kind of BS! This is a regular occurence on Windows and some vendors make a ton of money selling "tune up" utilities for Windows. I haven't found many for the MAC. CleanMyMac is a good tool to clean up disk, but does nothing to track down garbage apps that may be causing issues.

I ran that EtreCheck but don't know how to track down, find, and delete some of its results. i really don't want to have to get down into the UNIX core that sits under OS X via terminal. Nor should I have to if Apple does there job!

I have no idea who you are or why you defend them, but the bottom line is the OS X folks are not doing their job!

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